Botanical Extracts (Herb extracts) refers to the ingredients extracted or processed from plant (all or a portion of the plant) by suitable solvents or methods. They can be used in the pharmaceutical, food, health, beauty and other industries.
We source and supply these ingredients of plant (botanicals) primarily to specialty food and nutritional industries. We are steadfast and committed to our sales support, research and development of any botanical we supply. We have perpetual inventory and we choose to "optimize" formulations with our clients.
Botanical Extracts Plant Extracts,Botanical Extracts,Fruit Extracts,Natural Extracts SINOCHEM PHARMACEUTICAL CO., LTD , http://www.sinochemnutrition.com
1. The selection of non-polluted potato for pollution-free cultivation should choose a neutral or slightly acidic paddy field with good ecological conditions, away from the source of pollution, deep plowed layer, loose soil, good irrigation and drainage conditions, and organic-rich neutral or slightly acidic. Rice paddies should be 15 to 20 cm long when rice is harvested. No-tillage potato pollution-free cultivation in the implementation of flood and drought rotation, can reduce and avoid pest damage, regulate soil physicochemical properties and balanced nutrients, can effectively promote the growth of tubers, improve resistance.
2. No-tillage in paddy field, excavation of high-yield ditch, 15 to 20 cm in width, 15 cm in depth, and 160 cm in width. The excavated soil should not be piled on the ditch. It should be thrown evenly in the middle of the eaves so that the eaves can be slightly arched to avoid water accumulation. At the same time, a good gutter should be opened so that the ditch will be open and there will be no accumulation of rain. Normal grasses and rice bran do not affect planting. If large grasses can be toppled or skim, do not use herbicides.
3, sowing no-till potato pollution-free cultivation of spring and autumn sowing in two ways. Spring sowing should choose early maturation, high yield, good commercial quality, wide adaptability, strong disease resistance varieties, such as Dongnong 303, Kexin No. 2, and so on, the use of virus-free seed potato to increase yield is more obvious. Spring sowing is generally planted in early February and harvested in early May. Autumn sowing should use spring harvested early-maturing varieties of good potato chips as seed potatoes, generally sowing in late August, harvested in mid-to-late November. Seed potatoes require fresh, smooth, uniform, no pests, and individual small potatoes weighing 20-30 grams. If seed potatoes need to germinate, generally 15 to 20 days before sowing, in the temperature of 15 ~ 20 °C, humidity 75% ~ 80% of the conditions, when the bud grows about 1 cm when diluted see Guangyao buds. The seed potatoes are placed directly on the surface of the soil when sowing, and the potato eyes are obliquely close to the soil surface. Each pod broadcast 4 to 5 lines, spacing 30 to 40 cm, spacing 25 cm, leaving 20 cm each side, acres (1 mu = 667 square meters, the same below) broadcast 5000 or so. After the sowing, we must put poison baits and do a good job of rodent control to ensure Qimiao.
4, fertilization can be based on paddy field fertility and yield requirements once enough base fertilizer, not top-dressing. Fertilizers are dominated by organic fertilizers, supplemented by chemical fertilizers, and the applied fertilizers should not adversely affect the potato environment and potato quality. The medium fertility field generally applies 1000 to 1500 kg of agricultural fertilizer per mu or 100 to 150 kg of organic fertilizer, and the applied nitrogen, phosphorus and potassium are each 15% of potassium sulfate compound fertilizer and 60 kg of urea, plus 15 to 20 urea. kilogram. Apply in the middle of two kinds of potatoes at the time of sowing to prevent fertilizer. If decomposed manure is used as a basal fertilizer, it may be mixed with soil and applied directly to the seed potatoes at the time of sowing. One month prior to harvesting, spraying plants with potassium dihydrogen phosphate and other fertilizers yielded better yield increase.
5, cover the straw after sowing with straw evenly covered on the surface, gently pat, the thickness is generally 8 to 10 cm as well. Straw cover thickness is less than 8 cm, and it is very likely to produce green potatoes, affecting the commercial nature; covering too thick (more than 15 cm) is not conducive to emergence, but also affect the yield. After clearing the grass, clear the ditch and evenly press the soil dug in the ditch onto the straw to prevent the straw from being blown away by the wind and causing the seed potatoes to be exposed.
6. Field management Rice straw-covered potatoes do not need top dressing and weeding, but they must be well managed. During the period of potato growth and development, it must be ensured that there is sufficient water, especially during the expansion of the tubers, the transpiration of the shoots is vigorous, and the underground stems grow rapidly. At this time, more water is needed, and the soil should always be kept moist to promote tuber enlargement and promote straw. rot. Drought should be taken with small water along the ditch irrigation, so that the water slowly infiltrated into the gills. Can not use flood irrigation. In rainy seasons or low-lying areas, it is important to pay attention to drainage and prevent stains and prevent the accumulation of stagnant water in the fields.
7. Pest control The no-tillage potato is covered with straw for the entire period of cultivation. The surface microclimate has been greatly improved and the damage caused by pests and diseases has been relatively reduced. Generally no spraying of pesticides is required. In case of late blight, 58% metalaxyl MnZn wettable powder can be applied to water 800 times or 25% metalaxyl WP to water 500 to 700 times at the beginning of the disease, every 7 to 10 days before spraying. Once, use 2 times; if bacterial wilt occurs, use 2000 to kill 100 grams of water to 2000 times of the liquid or neemectin 100 grams of water to 4000 times the liquid spray 1 to 2 times.
8, timely harvest stems and leaves showing yellow ripe potato characteristics, you can harvest. When straw is used to grow potatoes, 70% of the potatoes are grown on the soil surface. When harvesting, just pick up the straw and pick up most of the potatoes. The average yield per mu is more than 1350 to 1450 kg.
Potato no-tillage cultivation is a new method for potato cultivation. It eliminates the three processes of plowing, soil preparation and digging in traditional cultivation. It saves time and labor, is highly productive, and is well received by farmers. Now no-till potato pollution-free cultivation techniques are introduced as follows.